Hanger for use in concrete-ceilings



Oct. 22, 1929. H. H. CRAWFORD 1,732,260

HANGER FOR USE IN CONCRETE CEILINGS Filed Jan. 3, 1928 j/ Zy 021279 121 Patented Get. 22, 1929 ra'rss PATENT Fries HARRY H. CRAWFORD, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF 330 JOHN H. CRAVE FORD, OF CHICAGO, ILLINOIS HANGER'FOR USE IN CONCRETE-CEILIN'GS Application filed January 3, 1928. Serial No. 244,149.

This invention relates to improvements in hangers for use in concrete ceilings and it consists of the matters hereinafter described and more particularly pointed out in the ap pended claims.

A hanger of the kind to which the present invention more particularly refers to, is best shown and described in my prior Patent #1,390,9S granted September 20, 1921, and one of the objects of the present invention is to improve the construction of the hanger, whereby it may be more readily assembled and will provide a greater range of adjustment for the hanger bolt.

Another object of the invention is to provide in a hanger of this kind an improved form of cover to enclose the associated bolt end and nut and which effectively prevents the entrance of portions of the wet concrete into said cover by which the hanger is sur rounded.

These objects of the invention as well as others, together with the many advantages thereof will more fully appear as I proceed with my specification.

In the drawings Fig. 1 is a view in side elevation of the improved hanger as when imbedded in a concrete ceiling and showing the temporary sup porting structure or form in place.

Fig. 2 is a longitudinal vertical sectional view through the improved hanger on an enlarged scale as taken on the line 2-2 of Fig. 3.

Fig. 3 is a top plan view of the hanger with parts removed therefrom to more clearly show the construction thereof.

Fig. 4E is a transverse vertical sectional View through the same as taken along the line l4 of Fig. 2.

Fig. 5 is a view in side elevation of a sheet metal cover or housing forming a part of the improved hanger.

My improved hanger which is intended to be installed in a concrete ceiling at the time of the pouring of the concrete upon the ceiling forms, comprises a substantially U-shaped anchor member 1 and a sheet metal cover 2 so fitting upon the same as to form a chamber which is substantially sealed against the entrance of any wet concrete thereinto.

The anchor member which is made from a length of channel iron, comprises a substantially horizontal base 3 and upwardly diverging legs 1-4 respectively each of which terminates in a substantially horizontal, lateral extension 5. The web 6 of the channel is arranged at the bottom of the anchor while the side flanges 77 extend upwardly there from all as best shown in Fig. 2. In the web portion of the base 3 is provided an elongated slot 8, which is narrower than said web portion itself.

The sheet metalcover 2 comprises a downwardly facing top channel part 9 of an interior width approximating that of the slot 8 and which includes a horizontal top wall 10 and side walls 11-11, the ends of said side walls being inclined to fit upon the web portions of the diverging side legs 4 1 of the anchor. Extending laterally from the bottom end of each side wall, is a horizontal flange 12 which is of a depth between its ends approximating the overall width of the base 3 of the anchor, the end portions 1212- of said flanges being formed to pass the side flanges 7 of the base where they merge by a rounded corner into the side flanges of the diverging parts 4-4; of the anchor. Depending from the wider midportion of each flange 12 is a vertical wall part 13, which terminates in a laterally extending horizontal ear 1e having a pair of apertures 15 therein. The top wall 10 of the top channel part 9 of the cover has end extensions 10 10 curved to have a snug fitting engagement upon the curved corners 66'* of the channel web 6 between the legs ll and extensions 5-5.

Before such a cover as Just above described is disposed in assembled relation upon an anchor as shown in Fig. 2, a nut 16 is placed within the channel part of the anchor base and thereafter the portions 13-13 of the cover are secured to the flange parts 77 of the base 8 in any suitable manner as for instance by spot welding as indicated at 17 -17 in Fig. l. With the parts in this position, the lateral opposed portions of the nut 16' are disposed under the flanges 12-12 of the cover in such a manner as to prevent any vertical disarrangement of the nut but permitting an adjustment thereof longitudinally of the anchor base, the opposite flat sides of the nut so engaging the side flanges of the base as to prevent the rotation of said nut. Thus the nut is enclosed in a housing on the anchor and is fully protected against such Wet concrete as tends to seek admission thereto and which of course would prevent any adjustment of the nut therein after the concrete had set. Associated with the nut is a bolt 18 which extends up through the slot 8 into threaded engagement with the nut.

The hanger thus fully assembled and comprising the anchor, covering, nut and bolt, constitute a complete device ready for shipment as an entirety and this without the danger of coming apart. In installing such a hangs it is positioned upon the ceiling form 19 with the base resting thereon and with the bolt pa sing down through a suitable opening therein. In a piping or like job, a plurality of such hangers are arranged in line and then nails 20 are driven through the openings 15 of the ears lat into the forms to temporarily secure the hangers in place after which concrete is poured upon the form to provide the ceiling 21 which concrete entirely surrounds the hanger so that the same is imbedded in the ceiling after the same has set. After the form has been removed, the bolt is ready to receive such devices as may be necessary to secure piping or the like thereto. As the base 8 rests upon the form, it is apparent that the same is exposed after removal of the form so that if any lateral adjustment of the bolt is necessary this may be easily carried out by moving the same one way or the other in slot 8 and if the bolt is too long or too short, the same may be screwed one way or the other with respect to the nut, the channel part 9 of the cover permitting movement of the top end of the bolt thereinto.

The device is simple in construction and securely holds in a ceiling. The cover and anchor are so formed and so interengage with each other as to provide a tightly closed chamber for the nut which effectively prevents the entrance of concrete thereinto, so that proper adjustment of the hanger bolt may be made after the hanger as a whole is imbedded in the ceiling.

/Vhile in describing my invention, I have referred in detail to the form arrangement and construction of the various parts thereof, the same is to be considered as illustrative only so that I do not wish to be limited thereto except as may be pointed out in the appended claims.

I claim as my invention 1. A hanger embodying therein a substan tially U-shaped anchor member of channel iron comprising a base portion with a slot therein and diverging side legs each with a with its end disposed in that portion of thechamber formed by the narrow top channel part.

2. A hanger embodying therein, a substantially U-shaped anchor member of channel iron comprising a base portion with a slot therein, and diverging side legs each with a lateral extension, a cover associated with the anchor and including a downwardly facing narrow top channel part positioned above the base with its ends inclined to fit within said diverging legs, and having a turned up top wall extension at each end to engage the web of the diverging side legs of the anchor memher, said cover also including a wider channel part embracing and secured to opposite sides of the base and having attaching ears thereon, said anchor and cover providing a closed chamber above said base with the narrow top channel part forming an upper conipartinent inthe chamber and a nut in sair closed chamber resting on said base and adapted to have threaded thereinto a bolt extending through said slot and up int-o said narrow compartment formed by the top channel part of the cover.

In testimony whereof, I have hereunto set my hand, this 27th day of December, 1927.

HARRY H. CRAWFORD. 

